The details are as follows:

Crankshaft Repair:

The damaged crankshaft of the DAIHATSU 5DC-17 engine was subject to the following inspection procedure:

• Dimensional inspection for taper and ovality.
• All five crankpins, each with a standard diameter of 145 mm, showed ovality and taper ranging from 0.62 mm to 0.76 mm. Technicians consider this range to be on the higher side.
• Technicians checked the crankpin hardness using a portable calibrated hardness tester. They observed that it remained within the specified limits
• Since an accident damaged the crankshaft, technicians performed crack detection on all crankpins using MPI. They did not find any cracks or abnormalities in the five crankpins.
• On visual inspection, radius radius-filled profile found damaged.
• Technicians checked the crankshaft deflection and observed that it remained within the specified limits.

Crankshaft Grinding:

Based on the initial inspection, our technicians undertook the onsite grinding of all the crankpins.

The crankpin size was reduced from the standard 145 mm to the following:

1. Minimum size after grinding is maintained as 142.98
2. Maximum size maintained after grinding is 143.00

All the parameters were checked during the final inspection, and the crankshaft was found acceptable.

The grinding of DAIHATSU 5DC-17 engine crankpin having a standard diameter of 145 mm and bearing with of only 64 mm was a challenge mainly because in this particular model of DAIHATSU 5DC-17 engine, the bearing width is too less and it’s difficult to accommodate the grinding tool on the crankpin. The old and leading grinding companies based in Europe and the UK do not have the facility and equipment to grind the crankpin with having width as small as 64 mm.

As a standard protocol, RA Power Solutions technicians prepare pre-inspection reports for all technical parameters they check before repairing the crankshaft. After completing the crankshaft repair of the DAIHATSU 5DC-17 engine, they prepare final reports using RA Power Solutions’ inspection formats. We keep these reports on record and share them upon request.

RA Power Solutions is proud to execute successfully the onsite grinding of the crankpin, having such a small bearing width. Technicians repaired the damaged engine block using metal stitching and the metal locking process. This process saved the block from rejection. The engine, after repair, is performing satisfactorily.

RA Power Solutions is the only company in the asian continent providing onsite crankshaft repair for the smaller crankpin width of even 40 mm. For further details, you may contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or  +91 9810012383.

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Necessity for Onsite Crankshaft Grinding and Polishing Machine

We observe that after continuous running of the engine and crankshaft, it is important to inspect the crankshaft for the following main parameters during a major engine overhaul:

1. To check the taper and ovality of the crankpin/main journal diameter.
2. To check the surface finish of the crankpin/main journal.
3. Inspection of hardness and the presence of cracks.
4. Visual inspection for radius fillet and lubricating oil hole.

If the crankpin or main journal deviates beyond the manufacturer’s limits, operators must grind and polish the crankshaft.. Hence there is a requirement of crankshaft grinding machine which is capable of maintaining the tolerances as stipulated in the manufacturer’s manual.

Change of Technology – In situ Crankshaft Grinding & Polishing Machine

In the past, operators always used bench-type crankshaft grinding machines. They installed these machines in a workshop and had to disassemble the engine, remove the crankshaft, pack it, and transport it to the designated workshop. This process is now outdated.

Technology has changed. Portable, lightweight, and easy-to-operate in situ crankshaft grinding and polishing machines have replaced heavy-duty, expensive bench-type machines. Operators no longer need to remove the crankshaft from the engine block, as they can grind and polish the crankpin or main journal onsite. They insert the machine through the inspection window.

Main Features of Revolutionary Onsite Crankshaft Grinding and Polishing Machine

1. Excellent on-site grinding equipment replaces the outdated heavy-duty bench-type crankshaft grinding machine.
2. The onsite crankshaft grinding and polishing machine is portable and operators can easily carry it onboard a vessel, to a power plant, or any installation worldwide
3. Easy to operate and easy to maintain.
4. We designed the on-site crankshaft grinding and polishing machine to maintain close tolerances in taper, ovality, surface finish, runout, and other parameters. All meet the manufacturer’s specifications.
5. Free onsite training in our workshop is provided.

Quality Aspect of In situ Crankshaft Grinding Machine

We are an ISO-certified company. We strictly follow all quality control norms during machine manufacturing.

Main body of the machine is manufactured out of titanium steel which has the inherent quality of absorbing the vibrations. This facilitates to undertake grinding and polishing of crankshaft even while sailing of the vessel. We subject every part to stringent inspection and improve metallurgical properties over time based on field trials and reports.

RA Power Solutions prices the in situ crankshaft grinding machine affordably for shipping companies, power plants, and engine repair workshops. The cost of an in situ crankshaft grinding and polishing machine is recoverable in two or three assignments. Stop paying exorbitant prices to European companies for the repair of the crankshaft and own a machine.

RA Power Solutions created the onsite crankshaft grinding and polishing machine from forty-seven years of experience in this field

We are executing crankshaft grinding repair services in Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates, Vietnam, UK, USA and other countries.

For any information on the latest technological onsite crankshaft repair machine, Crankshaft Grinding at Low cost,  crankshaft polisher machine, and onsite inspection of crankshaft, please email us at info@rapowersolutions.com, rajshahani@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post Latest Technological Onsite Crankshaft Grinding Machine Now Available at Low Cost appeared first on Crankshaft Grinding Machine.

RA Power Solutions has introduced this revolutionary onsite crankpin and main journal grinding equipment nearly five decades back. We have introduced this machine for the diameter ranging between 30 mm to 700mm. The onsite crankpin and main journal grinding equipment is very easy to use and maintain. We also provide training to the client’s engineers to how to use this equipment efficiently.

Features of Onsite Crankpin and Main Journal Grinding & Polishing Equipment:

1. Portable, lightweight, and easy to use.
2. Grinding and Polishing of the crankshaft is done with minimum vibrations.
3. For grinding and polishing of crankpins by onsite crankshaft grinding machine, it does not require any reference of radius fillet.
4. Any rotary shaft like turbine shaft, intermediate shaft, alternator shaft can be grind and polish by using this onsite grinding equipment.
5. On-site crankpin main journal grinding equipment is capable of maintaining close tolerance within 0.02 mm in terms of taper and ovality.

RA Power Solutions has sold more than a thousand on-site crankpin and main journal grinding machines worldwide. All the machines are performing satisfactorily. References can be provided upon request.

We are executing crankshaft grinding repair services in Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates, Vietnam, UK, USA and other countries.

For more information portable crankshaft grinding machine, crankshaft polishing crankpin machine, onsite grinding of crankshaft, and main journal grinding equipment or quotes, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or  +91 9810012383.

The post Onsite Grinding of Crankshaft is now Possible with Portable Equipment | RA Power Solutions appeared first on Crankshaft Grinding Machine.